@article{oai:rakuno.repo.nii.ac.jp:00002309,
 author = {保原, 達 and MIZUNO, Naoharu and AMANO, Yoji and YOKOTA, Hiroshi and TANIYAMA, Hiroyuki},
 issue = {4},
 journal = {Soil science and plant nutrition},
 month = {Aug},
 note = {Article},
 pages = {582--589},
 title = {Mercury distribution in tephra soil layers in Hokkaido, Japan, with reference to 34,000-year stratification},
 volume = {55},
 year = {2009}
}